<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    *{
        margin: 100px;
    }
    .div1{
        width: 200px;
        height: 200px;
        background-color: red;
        color: white;
        font-size: 50px;
        /* animation: div1 2s linear infinite; */
        transition: 2s ease;
    }
    .div1:hover{
        transform: rotate(-405deg);
    }
    /* @keyframes div1{
        from{
            transform: rotate(0deg);
        }
        to{
            transform: rotate(-360deg);   
        } 
    } */
</style>
<body>
    <div class="div1">遥遥领先</div>
</body>
</html>